Always wanted one of these - a little history below courtesy of the www:

The Princess Mary Christmas gift box was a brass or silver tin containing a number of gifts intended to be distributed to all members of the armed forces of the British Empire on Christmas day 1914, during World War I.

Following the outbreak of the First World War in August 1914, the British Expeditionary Force was sent to the Western Front and was soon joined by troops from the Empire, those from India arriving before the end of the year. In October 1914, George V's 17-year-old daughter, Mary, Princess Royal, launched an appeal to fund every member of the armed forces receiving a Christmas gift. Shortly before Christmas 1914, advertisements were placed in the British press seeking donations for the "Soldiers and Sailors Christmas fund" and £152,691 was soon raised.

The funding was used to manufacture small boxes made of silver for officers and brass for all others. Each was decorated with an image of Mary and other military and imperial symbols and typically filled with an ounce of tobacco, a packet of cigarettes in a yellow monogrammed wrapper, a cigarette lighter, and a Christmas card and photograph from Princess Mary. Some contained sweets, chocolates, and lemon drops

I wonder what the contents of this one were and in what conditions it has seen during WW1:

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